(3xy^2+6x^2y)÷3xy
Thu gon cac don thuc sau roi tim he so va bac cua no
a, (-2xy^3). (1/3xy)^2
b,18x^2y^2 . (-1/6x^3y)
c, (-2/3xy^2) . 6x^2y^2
Làm tính chia
a, (-2x^5+3x^2-4x^3):2x^2
b, (x^3-2x^2y+3xy^2):[-1/2x]
c, (3x^2y^2+6x^2y^3-12xy):3xy
làm tính chia
a, (-2x^5+3x^2-4x^3):2x^2
b, (x^3-2x^2y+3xy^2):[-1/2X]
C, (3x^2y^2+6x^2y^3-12xy):3xy
Chia đa thức: (9x^2-2y^2+3xy-6x-y+1):(3x-1+2y)
Phân tích thành phân tử
\(3x^3y-6x^2y-3xy^3-6xy^2z-3xyz^2+3xy\)
đặt 3 xy làm chung nha bn ...
~ hok tốt ~
\(3x^3y-6x^2y-3xy^3-6xy^2z-3xyz^2+3xy\)
\(=3xy\left(x^2-2x-y^2-2yz-x^2+1\right)\)
\(=3xy\left(\left(x^2-2x+1\right)-\left(y^2+2yz+z^2\right)\right)\)
\(=3xy\left(\left(x-1\right)^2-\left(y-z\right)^2\right)\)
\(=3xy\left(x-1+y-z\right)\left(x-1-y+z\right)\)
Phân tích thành nhân tử:
\(3x^3y-6x^2y-3xy^3-6xy^2z-3xyz^2+3xy\)
\(3x^3y-6x^2y-3xy^3-6xy^2z-3xyz^2+3xy\)
\(=3xy\left(x^2-2x-y^2-2yz-z^2+1\right)\)
\(=3xy\left[\left(x-1\right)^2-\left(y+z\right)^2\right]\)
\(=3xy\left(x-1-y-z\right)\left(x-1+y+z\right)\)
Tim gia tri x nho nhat
(9xy^2-6x^2y):(-3xy)+(6x^2y+2x^4):(2x^2)
rút gọn : a) (-5x^2y+3xy^2+7)-(-6x^2y+4xy^2-5)
b)(2,4x^3-10x^2y)+(7x^2y-2,4x^3+3xy^2)
c) -(15x^2y-7xy^2-6y^2)-(2x^2-12x^2y+7xy^2)
giúp mình với , mình đang cần gấp
(x^2y^2 - x^2y + 4xy + 2x - 4) + (-x^2y^2 - 6x^2y - xy + 2x+4) - (2x^2y^2 - 3xy +x - 4)
=